diff --git a/assets/data/cdn/jsdelivr.yml b/assets/data/cdn/jsdelivr.yml
index c188a539957..efa824928ce 100644
--- a/assets/data/cdn/jsdelivr.yml
+++ b/assets/data/cdn/jsdelivr.yml
@@ -48,8 +48,6 @@ libFiles:
   mermaidJS: mermaid@10.9.0/dist/mermaid.min.js
   # meting@2.0.1 https://github.com/metowolf/MetingJS
   metingJS: meting@2.0.1/dist/Meting.min.js
-  # normalize.css@8.0.1 https://github.com/necolas/normalize.css
-  normalizeCSS: normalize.css@8.0.1/normalize.min.css
   # object-fit-images@3.2.4 https://github.com/fregante/object-fit-images
   objectFitImagesJS: object-fit-images@3.2.4/dist/ofi.min.js
   # sharer.js@0.5.1 https://github.com/ellisonleao/sharer.js
diff --git a/layouts/posts/single.html b/layouts/posts/single.html
index 2daaae8bcfa..16b08520441 100644
--- a/layouts/posts/single.html
+++ b/layouts/posts/single.html
@@ -163,7 +163,7 @@ <h2 class="single-subtitle">{{ . }}</h2>
                             <div class="details series-nav open">
                                 <div class="details-summary series-title">
                                     <span>{{ T "series" }} - {{ $term.Title }}</span>
-                                    <span><i class="details-icon fas fa-angle-right"></i></span>
+                                    <span class="details-icon">{{ partial "plugin/fontawesome.html" (dict "Style" "solid" "Icon" "angle-right") }}</span>
                                 </div>
                                 <div class="details-content series-content">
                                     <nav>
@@ -189,7 +189,7 @@ <h2 class="single-subtitle">{{ . }}</h2>
             <div class="details toc print:!tw-block" id="toc-static"  kept="{{ if $toc.keepStatic }}true{{ end }}">
                 <div class="details-summary toc-title">
                     <span>{{ T "contents" }}</span>
-                    <span><i class="details-icon fas fa-angle-right"></i></span>
+                    <span class="details-icon">{{ partial "plugin/fontawesome.html" (dict "Style" "solid" "Icon" "angle-right") }}</span>
                 </div>
                 <div class="details-content toc-content" id="toc-content-static">
                     {{- dict "Content" .TableOfContents "Ruby" $params.ruby "Fraction" $params.fraction "Fontawesome" $params.fontawesome | partial "function/content.html" | safeHTML -}}
diff --git a/themes/DoIt b/themes/DoIt
index ea7dc16f031..cacc2e01c70 160000
--- a/themes/DoIt
+++ b/themes/DoIt
@@ -1 +1 @@
-Subproject commit ea7dc16f031fb4069c88fcf4c34f3c344b89843a
+Subproject commit cacc2e01c706f4c82554a123ada798a5a2dbff04